NPM peer dependencies update

[Mantas Skripkauskas]

NPM peer dependencies needs to be updated

Conflicting peer dependency: gatsby-source-filesystem@2.11.1
node_modules/gatsby-source-filesystem
npm ERR!   peer gatsby-source-filesystem@"^2.0.27" from gatsby-source-instagram@0.9.0
npm ERR!   node_modules/gatsby-source-instagram
npm ERR!     gatsby-source-instagram@"^0.9.0" from the root project

[Grayson Hicks]

This is a warning just saying you have two versions of gatsby-source-filesystem. I think the version as a peer dependency here is correct (it works with ^2.0.27) and shouldn't be changed. If you are using npm 6 or below, you don't see this warning. With npm 7, you can use --legacy-peer-deps when installing to install both versions and avoid this warning. Changing the version in this package to 2.11.1 may fix it for you, but anyone using another version in their site would still see it, so it doesn't really help.

@oorestisime I believe this can be closed.